Re: [PATCH v3 00/22] Convert all remaining drivers to GEM object functions

[Christian König <christian.koenig@xxxxxxx>]

Feel free to add an Acked-by: Christian König <christian.koenig@xxxxxxx> 
to all patches which I haven't explicitly reviewed.
I would say we should just push this to drm-misc-next now.

Thanks for the nice cleanup,
Christian.

Am 23.09.20 um 12:21 schrieb Thomas Zimmermann:
> The GEM and PRIME related callbacks in struct drm_driver are deprecated in
> favor of GEM object functions in struct drm_gem_object_funcs. This patchset
> converts the remaining drivers to object functions and removes most of the
> obsolete interfaces.
>
> Version 3 of this patchset mostly fixes drm_gem_prime_handle_to_fd and
> updates i.MX's dcss driver. The driver was missing from earlier versions
> and still needs review.
>
> Patches #1 to #6, #8 to #17 and #19 to #20 convert DRM drivers to GEM object
> functions, one by one. Each patch moves existing callbacks from struct
> drm_driver to an instance of struct drm_gem_object_funcs, and sets these
> funcs when the GEM object is initialized. The expection is .gem_prime_mmap.
> There are different ways of how drivers implement the callback, and moving
> it to GEM object functions requires a closer review for each.
>
> Patch #18 fixes virtgpu to use GEM object functions where possible. The
> driver recently introduced a function for one of the deprecated callbacks.
>
> Patches #7 and #20 convert i.MX's dcss and xlnx to CMA helper macros. There's
> no apparent reason why the drivers do the GEM setup on their's own. Using CMA
> helper macros adds GEM object functions implicitly.
>
> With most of the GEM and PRIME moved to GEM object functions, related code
> in struct drm_driver and in the DRM core/helpers is being removed by patch
> #22.
>
> Further testing is welcome. I tested the drivers for which I have HW
> available. These are gma500, i915, nouveau, radeon and vc4. The console,
> Weston and Xorg apparently work with the patches applied.
>
> v3:
>         * restore default call to drm_gem_prime_export() in
>           drm_gem_prime_handle_to_fd()
>         * return -ENOSYS if get_sg_table is not set
>         * drop all checks for obj->funcs
>         * clean up TODO list and documentation
> v2:
>         * moved code in amdgpu and radeon
>         * made several functions static in various drivers
>         * updated TODO-list item
>         * fix virtgpu
>
> Thomas Zimmermann (22):
>    drm/amdgpu: Introduce GEM object functions
>    drm/armada: Introduce GEM object functions
>    drm/etnaviv: Introduce GEM object functions
>    drm/exynos: Introduce GEM object functions
>    drm/gma500: Introduce GEM object functions
>    drm/i915: Introduce GEM object functions
>    drm/imx/dcss: Initialize DRM driver instance with CMA helper macro
>    drm/mediatek: Introduce GEM object functions
>    drm/msm: Introduce GEM object funcs
>    drm/nouveau: Introduce GEM object functions
>    drm/omapdrm: Introduce GEM object functions
>    drm/pl111: Introduce GEM object functions
>    drm/radeon: Introduce GEM object functions
>    drm/rockchip: Convert to drm_gem_object_funcs
>    drm/tegra: Introduce GEM object functions
>    drm/vc4: Introduce GEM object functions
>    drm/vgem: Introduce GEM object functions
>    drm/virtgpu: Set PRIME export function in struct drm_gem_object_funcs
>    drm/vkms: Introduce GEM object functions
>    drm/xen: Introduce GEM object functions
>    drm/xlnx: Initialize DRM driver instance with CMA helper macro
>    drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver
>
>   Documentation/gpu/drm-mm.rst                  |  4 +-
>   Documentation/gpu/todo.rst                    |  9 +-
>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c       |  6 --
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c       | 23 +++--
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h       |  5 --
>   drivers/gpu/drm/armada/armada_drv.c           |  3 -
>   drivers/gpu/drm/armada/armada_gem.c           | 12 ++-
>   drivers/gpu/drm/armada/armada_gem.h           |  2 -
>   drivers/gpu/drm/drm_gem.c                     | 53 ++++--------
>   drivers/gpu/drm/drm_gem_cma_helper.c          |  8 +-
>   drivers/gpu/drm/drm_prime.c                   | 14 +--
>   drivers/gpu/drm/etnaviv/etnaviv_drv.c         | 13 ---
>   drivers/gpu/drm/etnaviv/etnaviv_drv.h         |  1 -
>   drivers/gpu/drm/etnaviv/etnaviv_gem.c         | 19 ++++-
>   drivers/gpu/drm/exynos/exynos_drm_drv.c       | 10 ---
>   drivers/gpu/drm/exynos/exynos_drm_gem.c       | 15 ++++
>   drivers/gpu/drm/gma500/framebuffer.c          |  2 +
>   drivers/gpu/drm/gma500/gem.c                  | 18 +++-
>   drivers/gpu/drm/gma500/gem.h                  |  3 +
>   drivers/gpu/drm/gma500/psb_drv.c              |  9 --
>   drivers/gpu/drm/gma500/psb_drv.h              |  2 -
>   drivers/gpu/drm/i915/gem/i915_gem_object.c    | 21 ++++-
>   drivers/gpu/drm/i915/gem/i915_gem_object.h    |  3 -
>   drivers/gpu/drm/i915/i915_drv.c               |  4 -
>   .../gpu/drm/i915/selftests/mock_gem_device.c  |  3 -
>   drivers/gpu/drm/imx/dcss/dcss-kms.c           | 14 +--
>   drivers/gpu/drm/mediatek/mtk_drm_drv.c        |  5 --
>   drivers/gpu/drm/mediatek/mtk_drm_gem.c        | 11 +++
>   drivers/gpu/drm/msm/msm_drv.c                 | 13 ---
>   drivers/gpu/drm/msm/msm_drv.h                 |  1 -
>   drivers/gpu/drm/msm/msm_gem.c                 | 19 ++++-
>   drivers/gpu/drm/nouveau/nouveau_drm.c         |  9 --
>   drivers/gpu/drm/nouveau/nouveau_gem.c         | 13 +++
>   drivers/gpu/drm/nouveau/nouveau_gem.h         |  2 +
>   drivers/gpu/drm/nouveau/nouveau_prime.c       |  2 +
>   drivers/gpu/drm/omapdrm/omap_drv.c            |  9 --
>   drivers/gpu/drm/omapdrm/omap_gem.c            | 18 +++-
>   drivers/gpu/drm/omapdrm/omap_gem.h            |  2 -
>   drivers/gpu/drm/pl111/pl111_drv.c             |  5 +-
>   drivers/gpu/drm/radeon/radeon_drv.c           | 23 +----
>   drivers/gpu/drm/radeon/radeon_gem.c           | 31 ++++++-
>   drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |  5 --
>   drivers/gpu/drm/rockchip/rockchip_drm_gem.c   | 12 ++-
>   drivers/gpu/drm/tegra/drm.c                   |  4 -
>   drivers/gpu/drm/tegra/gem.c                   |  8 ++
>   drivers/gpu/drm/vc4/vc4_bo.c                  | 21 ++++-
>   drivers/gpu/drm/vc4/vc4_drv.c                 | 12 ---
>   drivers/gpu/drm/vc4/vc4_drv.h                 |  1 -
>   drivers/gpu/drm/vgem/vgem_drv.c               | 21 +++--
>   drivers/gpu/drm/virtio/virtgpu_drv.c          |  1 -
>   drivers/gpu/drm/virtio/virtgpu_object.c       |  1 +
>   drivers/gpu/drm/vkms/vkms_drv.c               |  8 --
>   drivers/gpu/drm/vkms/vkms_gem.c               | 13 +++
>   drivers/gpu/drm/xen/xen_drm_front.c           | 44 ++++------
>   drivers/gpu/drm/xen/xen_drm_front.h           |  2 +
>   drivers/gpu/drm/xen/xen_drm_front_gem.c       | 15 ++++
>   drivers/gpu/drm/xlnx/zynqmp_dpsub.c           | 14 +--
>   include/drm/drm_drv.h                         | 85 +------------------
>   include/drm/drm_gem.h                         |  2 +-
>   59 files changed, 333 insertions(+), 375 deletions(-)
>
> --
> 2.28.0